Tire-mold.



l W. THRGF,

TRE MUM).

.PyLGAT-oif FILED JULY la, 1909.

Patented Faaa. '.7, 19 1.

' To all 'whom it may con-cam:

20 cure of the tire casing at the tread, where Josnrnw. THROPP, or'frnnnfronf, NEW JERSEY.

TIRE-MOLD.

' specification of tetrersratem. f Patented Feb. 7, 1911.

orignaiappucatiqn inea .March 1, 1909, sel-iai No..4so,74o. Divided and this'appueauon nieu' July 13,

1909. serialno. 507,324.

Beb itknown that I,'Josnrn W. Tnnorr,

. a citizen of the United States, and ai resident- 'of Trenton, in the county of Mercer and 5 State of Bew Jersey, have invented a new and Improved Tire-Mold. of which the followingis a full, clear, and exact description.

` This invention relates to a new and im.- proved mold, t-o be used in vcuring and vulcanizing the outer casings of pneumatic .tires or the lik', and is a division of my application Serial No. 480,110, tiled March 1, 1909. The object ofthis invention is to provide a device which' will'be simple in construction, efficient-gin its operation', easily manipulated, inexpensive to manufacture, and at the same time. strong and durable.

A further object of this invention is toprovide a device which will permit ahard `there is the greatest amount of wear, and which will `permit, a' soft cure at the sides of the tire casing, where flexibility is necessary. These and further objects, together with -t-he construction and combination of parts, will be more fully described hereinafter, and particularly set. forth inthe, claims.

Reference is to be had to the accompanying drawings forming a part of this speciieation. in which similarcharacters of refh erence indicate corresponding parts in all the gures, and in which-` -Figure 1 is a side View of one form of my device,l partly. in section to show the underlyingconstruction; Fig. 2 is .a transverse section on the line 2 -2 in Fig. 1; Fig.

'3 is a section, similar to the section shown in Fig. 1, of another form of my device;v

and Fig. 4 is a transverse section on the o line 4 4 in Fig. 3.

Referring more particularly to the separate partsof my device, 5 indicates the mold proper, which is preferably circular in form, and is composed'of two members G and 7.

lugs 12 and 13, which are adapted to receivetap-'bolts 14 and 15,by means of which the members 6 and- 7 are securedi.. together. There is alsoprovided ahollowvmandrel or `Each of these members 6 and 7 have in.

care 16 and the members G and 7 of the mold.

In order to cover the tread of the tire using .18, there is provided, in the vform shown in Figs. 1 and Q, acircular thin. metal band 1t), which-is adapted to 'abut 'against shoulders 20 and 21 on the members and 7, and the ends of which are secured together b v any suitable means, such as a vscrew-bolt which engages upwardlvextending` lugs A .3 and '2l ony brackets 25 and A2 6, which are secured tol the ends of the vband 19 1n any suitable.manner. In order to cover the ga p left between the ends of the baud 19. there is provided a suitable'plate 34, which is placed subjacent the ends of the` baud 19 on the tire asing 1S. In order that the members G and T of the mold 5 may be placed together in proper relation there are provided a plurality preferablv7 three) of in 'ardly-extemling flanges 2, which have center pins QS secured thereto, the latter being adapted to fit in correspending openings m inwardly-extendlng flanges 29 on the opposite member T. v In the form shown m Flgs. 3 and 4f. in

place of the metal band 19, there is provided a pluralityof segments 30, preferably three in number, which are formed preferably of" cast metal, and are joined together by means of bolts 3l, which extend through perforations in outwardlyeextending flanges 32 and 33 at the ends of the segments. In each of the segments 30, there are provide openings 34, to allow the bolts .to pass. In this form also, as clearly illustrated in Fig. 4, the compressing members, which are in the form ofthe segments 30, abut against the shoulders and 21 on the mold members 6 and 7.

AHaving thus described my invention, I claim as new and desire to secure by Letters VPatent z- 1. In a mold for tire casings, the combination with a core, of a. mold, havinga plurality of separable members, eaehof said members' having a shoulder thereon, means core 1G. which has an inwaidly-extending4 for centering said members-relative to each other, means for securing said members t0- gether, a continuous flexible pressure member adapted to abut against said shoulders',

'and means for constricting the size bf said pressuremember.

2. ln a mold tor tire casmgs, the -com. lbination with a core, of a mold comprising 'separable members, each of saidmembers -having a shoulder thereon, means for centering said members relative to eaeh other, means .for securing said memberstogether,

a pressure metal band adapted -to abut againstsaid shoulder, brackets on the end of said'band, anda screw bolt adapted to draw said brackets'together,

" 3. AIn a mold for tire casing's, the tcombi- .natio`n with a core, of mold members connation with:a -core, of mold finembers conf nected together at their innerl edges and spaced apart at their outer periphery to forman annular opening, an annular memberadapted to close said-opening, said annular member having portions thereof` adapted to be adjusted relative to each other,

and a bolt out of contact Withsaid mold members and mechanically connecting said portions,' for adjusting said portions of saidv annular member to vary the sizeof said annular member.

5. In a mold for tire casings, the combination with a core, of mold'members connected together at their' inner edges and spaced apart at their outer peripheries to form an annular opening, a mold member adapt-ed to close said opening, said annular member having ends adjustable relative to each other, and a mechanical adjusting device out of contact with said mold members for drawing said ends together.

6. In' a mold for tire casings, the combination With a core, of mold members connected together at their inner edges and spaced apart at theirl outer peripheries to form an annular opening, and' a selieontained contractible member adapted to close said opening and having mechanism opera.-

tive independently of said mold members,

for adjusting the size thereof.

A In testimony whereof Iy have signed my name' to this specification in the presenceof ttvo subscribing Witnesses.

JOSEPH WV. THROPP. Witnesses:

' Tnnononn R. Emeline,

ANDREW J. BERRIEN. 

